I have a problem with EPUB file converted from DOCX. The DOCX file is OK, when I make the EPUB I get it with a black page and black font. If I put the page in block, I can see the font but no help in trying to change the epub settings. If I put the page yellow, I still remain with black center. Does somebody have an idea ? It has the same appearance both on IPad 2 and when openig the epub in the Calibre. See the pix below :

Appearance of the epub epub1.jpg
The same page in block epub2.jpg
The background and font settings of this file epub3.jpg

I have tried to recreate the epub several times with several versions of Calibre but no change. The cause must probably be in the DOCX file as I don't have the same probelm with other files, only with 4 of the same origin.
Thanks in advance for your help,

Hello theducks, thanks, you are right. How can I cange that ? I have tried but it changes only one page and when I reopen the file it is black again.
JS

If it is attached to a style, edit (it out of) the stylesheet.
Sigil makes this easy. Or you could use Tweak(EPUB), explode and use a NOTEPAD type editor. /*background-color: black; */ will comment-out the stuff between in a stylesheet